Haiyuan in context: Street-network sprawl trends

Haiyuan in context

1.62.43.24<19751976–19901991–20052006–2020SNDi of street additions
1.62.43.24<19751976–19901991–20052006–2020SNDi of entire street network
HaiyuanNingxia Hui (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Haiyuan plotted against Ningxia Hui and China. The SNDi of new construction in Haiyuan followed a zig-zag trend with an overall decrease, compared to Ningxia Hui which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Haiyuan's incremental SNDi fell from 2.4 to 2.37 between 1991-2005 and 2006-2020. In terms of the aggregate network, Haiyuan ranked 11th out of 15 cities in Ningxia Hui and 528th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
2.37
Rank in China
435th of 1843
Rank in Ningxia Hui
8th of 15

Entire Network (Aggregate)

SNDi value
2.43
Rank in China
528th of 1843
Rank in Ningxia Hui
11th of 15

Rankings go from most connected to most disconnected — rank 1 is the most connected.

What about similarly populated cities?

1.62.43.24<19751976–19901991–20052006–2020SNDi of street additions
1.62.43.24<19751976–19901991–20052006–2020SNDi of entire street network
HaiyuanAtlixcoDongsheng

In new street additions, Haiyuan fluctuated in its street-construction patterns, while Atlixco built increasingly disconnected streets over time and Dongsheng fluctuated in its street-construction patterns. For the full network, Haiyuan became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards, while Atlixco became progressively more disconnected and Dongsheng fluctuated in connectivity. Notably, Haiyuan had a more sprawly network than Atlixco in 1975 but the two have since reversed their relative ranking.